The PAC OEM-2 is a universal sound system interface and controller which can be used for a variety of purposes:
- connecting an aftermarket radio to a common-ground speaker system;
- converting a factory radio's speaker-level outputs to preamp-level signal that can be connected to aftermarket amplifiers;
- adding aftermarket amplifiers to factory premium systems (Bose, JBL, etc.);
- connecting an aftermarket radio to a factory amplifier.
The unit has independent level controls for each of its 4 channels, so you can adjust output for any amplifier. It also features remote turn-on outputs for amps and power antennas.